Question

If A = diag(3, -1), then matrix A is ____________.

Options

• `[(0,3),(0,-1)]`

• `[(-1,0),(3,0)]`

• `[(3,0),(0,-1)]`

• `[(3,-1),(0,0)]`

Answer 1

If A = diag(3, -1), then matrix A is `underline([(3,0),(0,-1)])`.

Explanation:

as diag (3, -1) is a diagonal matrix. Its order is 2 × 2 with diagonal elements 3 and (-1).